Product details

Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 4.5 Input offset (+/-) (Max) (uV) 50 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 11 Features Overvoltage Protection CMRR (Min) (dB) 115 Input offset drift (+/-) (Max) (uV/C) 0.25 Input bias current (+/-) (Max) (nA) 2 Iq (Typ) (mA) 2.2 Bandwidth at min gain (Typ) (MHz) 1 Gain error (+/-) (Max) (%) 0.5 Operating temperature range (C) -40 to 85 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 1.3 Output swing headroom (to positive supply) (Typ) (V) -1.3 Input common mode headroom (to negative supply) (Typ) (V) 1.5 Input common mode headroom (to positive supply) (Typ) (V) -1.5 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.4 Gain non-linearity (+/-) (Max) (%) 0.002
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 4.5 Input offset (+/-) (Max) (uV) 50 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 11 Features Overvoltage Protection CMRR (Min) (dB) 115 Input offset drift (+/-) (Max) (uV/C) 0.25 Input bias current (+/-) (Max) (nA) 2 Iq (Typ) (mA) 2.2 Bandwidth at min gain (Typ) (MHz) 1 Gain error (+/-) (Max) (%) 0.5 Operating temperature range (C) -40 to 85 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 1.3 Output swing headroom (to positive supply) (Typ) (V) -1.3 Input common mode headroom (to negative supply) (Typ) (V) 1.5 Input common mode headroom (to positive supply) (Typ) (V) -1.5 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.4 Gain non-linearity (+/-) (Max) (%) 0.002
PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (DW) 16
  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.25µV/°C max
  • LOW INPUT BIAS CURRENT: 2nA max
  • HIGH COMMON-MODE REJECTION: 115dB min
  • INPUT OVER-VOLTAGE PROTECTION: ±40V
  • WIDE SUPPLY RANGE: ±2.25 to ±18V
  • LOW QUIESCENT CURRENT: 3mA max
  • 8-PIN PLASTIC AND CERAMIC DIP, SOL-16
  • LOW OFFSET VOLTAGE: 50µV max
  • LOW DRIFT: 0.25µV/°C max
  • LOW INPUT BIAS CURRENT: 2nA max
  • HIGH COMMON-MODE REJECTION: 115dB min
  • INPUT OVER-VOLTAGE PROTECTION: ±40V
  • WIDE SUPPLY RANGE: ±2.25 to ±18V
  • LOW QUIESCENT CURRENT: 3mA max
  • 8-PIN PLASTIC AND CERAMIC DIP, SOL-16

The INA114 is a low cost, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications.

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA114 is laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G = 1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent current is 3mA maximum.

The INA114 is available in 8-pin plastic and ceramic DIPs, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.

The INA114 is a low cost, general purpose instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications.

A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40V without damage.

The INA114 is laser trimmed for very low offset voltage (50µV), drift (0.25µV/°C) and high common-mode rejection (115dB at G = 1000). It operates with power supplies as low as ±2.25V, allowing use in battery operated and single 5V supply systems. Quiescent current is 3mA maximum.

The INA114 is available in 8-pin plastic and ceramic DIPs, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.

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Technical documentation

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Type Title Date
* Data sheet Precision Instrumentation Amplifier datasheet 27 Sep 2000
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article A six-sided puzzle: VCM vs. VOUT plots for instrumentation amplifiers 10 Jan 2014
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013
Application note Use Low-Impedance Bridges on 4-20mA Current Loop 27 Sep 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

INA114 TINA-TI Reference Design (Rev. C)

SBOC138C.TSC (93 KB) - TINA-TI Reference Design
Simulation model

INA114 PSpice Model (Rev. B)

SBOM013B.ZIP (61 KB) - PSpice Model
Simulation model

INA114 TINA-TI Spice Model (Rev. A)

SBOM207A.ZIP (4 KB) - TINA-TI Spice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Package Pins Download
PDIP (P) 8 View options
SOIC (DW) 16 View options

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